Expansion joint



INVENTOR ATTO R N EYS SePt- 4, 1934- QBOGART EXPANSION JOINT Filed sept.11, 1955 a# miam@ Patented Sept. 4, 1.934

f UNITED s'rA'r-Es PATENT ori-Ica 1,912.0 EXPANSION .rom Clyde mgm,seminale, om. Appucaann september 11, 193s, serum. stanziaA t 1 claim.(class-1er)v This invention vvrelates to expansion joints and has forthe `primary object the provisionv of a device of the above statedcharacter which will allow for expansion and contraction in pipe lines 6carrying high pressures, obviating the necessity of constructing'lineswith slack therein and the expense incident to such construction.

Another .object of this invention is the provision of a joint of theabove stated character which l willlbe simple, durable and capable\ofhaving certain .packing thereof replaced while in use vin a pipe linewithout the necessity of draining the line or the loss of iiuidpressurefrom the line.

With'these and other objects in view this in- -ls ventionconsists incertain novel features of construction, combination and arrangement ofparte to be hereinafter more fully described and claimed.

For a complete understanding of my invention.

reference is to be had to the following descripap tion and accompanyingdrawing, in which Figure l is a side elevation illustrating an`expansionjoint constructed in accordance with my invention.

Figure 2 is a lvertical sectional view illustrating the same. I Figure 3is a 4plan view illustrating the male 1 member of the joint.

Referring in detail to the drawing, the numeral l indicates an expansionjoint especially adapted 3 '0 for high pressure lines and consists of afemale member 2 and a male member 3. The members 2 and 3 are threaded,as shown at 4, for connecting them to a pipe line. The member 3 extendsa considerable distance in the member 2 and the inner end thereof isscrew threaded on which is mounted collars 5 retaining therebetween andupon he member 3 a series of packing cups 6 adapted to contact withtheinner wall of the female memberto prevent uid lpressure from between thefemale member and the male member, the latter being spaced from thewalls of a portion thereof, as clearly shown in' Figure 2. The femalemember includes sections '7 and 8. The section 8 has frictional contactwith the male member 3 while the section 7 is spaced therefrom. Theadjacent ends of the sections 'I and 8 are screw threaded to havethreaded thereto a collar 9 whereby the sections may be adjusted endwiserelative to each other and also for retaining packing elements 10 inengagementk with the adjacent ends ofthe sections? and 8 and the malemember 3. The packing elements are arranged in abutting engagement witheach other and with the adjacent ends of the sections :I and 8 andthesection 8 at its connected end is concaved to form a seat for one of thepacking elements 10. the latter-named'paeking element being shaped toilt within the seat. By adjusting the sections'l and 8 towards eachother by the collar`-9 the packing elements will be forced -intoengagement with each' other and also with the sections of the femalemember and in engagement with the male member 3.

The free end of the section 8 of 'the female member is screw threaded tohave threaded con nection with a gland 11 carrying a packing betweenitself and the end of the sections and the male member 3. I

A- construction in-accordance with the foregoing, will permit expansionand contraction in 10` a pipe line due to the fact that the male membermay slide'withinthe female member without loss of pressure between themale and female members. Further, itis tobenoted that the fluid may nowi'reelyv through the joint without obstruction.

WhenI it isn to renew the packing in the'slandll it is not necessary todrain the pipe line due to the fact that the packing elements 10 andpachng cups '8 willprevent-the escape of the fluid pressure. Thisarrangement will provide a large saving 'in oil lines-wherein excessivepressures are to becontendedwith requiring the renewal oi packing atfrequent intervals. A joint of this character is especially adaptablefor oil lines permitting such lines to be constructed without slackconsequently rendering a large saving in pipe material and permits thepipe line to readily expand and contract.

During thefuse of the device, the collar 9 is adjusted so that Vthepacking elements 10 lightly engage the male element 3 and the gland isturned tight to prevent escape of-iluid at the joint. However, when thepacking of the gland loses its life the collar' 9 is adjusted to tightenthe packing element 10 against the male element so that the gland can beremoved and repacked. After the repacking of the gland the collar 9is'again adjusted to slacken the packing elements on. the male element3.

While I have shown and described' the preferred embodiment oi." myinvention, it will be understoodthat minor changes inconstruction,combination and arrangementbf parts maybe made without departing fromthe spirit and scope of my invention, as claimed;

Having described the invention, I claim: An vexpansion jointcomprising'an elongated tu- A bular female member including detachablyconnected sections of different diameters, an -elou- M0 ing supported bysaid collar and engaging the adjacent ends of the sections and engagingwith the male member, and a. packing gland detachably and adjustablyconnected to the end of one of said sections and having the male memberextending therethrough.-

CLYDE BQGART.

